Added projects MtApi4 and MtApi5

2026-08-08 00:17:49 +00:00 · 2014-10-31 09:05:52 +02:00
parent 869d3a117b
commit 8746e96416
178 changed files with 26390 additions and 0 deletions
@@ -0,0 +1,61 @@
+using System; 
+using System.Security.Cryptography; 
+using System.Text;
+using System.Security;
+
+namespace Licensing
+{
+    public class DigitalSignatureHelper
+    {
+        public static String GeneratePrivateKey()
+        {
+            DSACryptoServiceProvider dsa = new DSACryptoServiceProvider();
+            return dsa.ToXmlString(true);
+        }
+
+        public static String GetPublicKey(String privateKey)
+        {
+            DSACryptoServiceProvider dsa = new DSACryptoServiceProvider();
+            dsa.FromXmlString(privateKey);
+            return dsa.ToXmlString(false);
+        }
+
+        public static string CreateSignature(string inputData, String privateKey)
+        {
+            // create the crypto-service provider:
+            DSACryptoServiceProvider dsa = new DSACryptoServiceProvider();
+
+            // setup the dsa from the private key:
+            dsa.FromXmlString(privateKey);
+
+            byte[] data = UTF8Encoding.ASCII.GetBytes(inputData);
+
+            // get the signature:
+            byte[] signature = dsa.SignData(data);
+
+            return Convert.ToBase64String(signature);
+        }
+
+        public static bool VerifySignature(string inputData, string signature, string publicKey)
+        {
+            // create the crypto-service provider:
+            DSACryptoServiceProvider dsa = new DSACryptoServiceProvider();
+
+            // setup the provider from the public key:
+            dsa.FromXmlString(publicKey);
+
+            // get the license terms data:
+            //byte[] data = Convert.FromBase64String(inputData);
+            byte[] data = UTF8Encoding.ASCII.GetBytes(inputData);
+
+            // get the signature data:
+            byte[] signatureData = Convert.FromBase64String(signature);
+
+            // verify that the license-terms match the signature data
+            if (dsa.VerifyData(data, signatureData) == false)
+                throw new SecurityException("Signature Not Verified!");
+
+            return true;
+        }
+    }
+}